Alert archive / Iowa / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 280, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 31, 2024, 3:23 AM CDT for 6 counties in Iowa. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 31, 2024, 3:23 AM CDT (08:23 UTC)
- Expired
- Jul 31, 2024, 3:56 AM CDT
- In force
- 33 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Appanoose County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Wapello County, IA
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 30, 11:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 8.4 hours before the alert went out and 207 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 111 J/kg
- Mixed-layer CIN
- -476 J/kg
- Mixed-layer LCL
- 1513 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 158 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 31, 2:38 AM CDT, 45 minutes earlier.
Area forecast discussion, Jul 31, 2:38 AM CDT, 45 minutes before
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</html>Hazardous weather outlook, Jul 30, 3:37 PM CDT, 11 hours 46 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 337 PM CDT Tue Jul 30 2024 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-312045- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene- Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union- Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne- Appanoose-Davis- 337 PM CDT Tue Jul 30 2024 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...This afternoon and tonight A Flood Watch is in effect for the area. Please refer to the National Weather Service website at weather.gov/desmoines for further details. Strong to severe thunderstorms will be possible this afternoon and overnight. Damaging winds, large hail, a tornado or two, and heavy rainfall will be possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday A Heat Advisory is in effect for the area Wednesday. Please refer to the National Weather Service website at weather.gov/desmoines for further details. Thunderstorms, some strong to severe, will remain possible through the morning hours in the east. Additional thunderstorms will arrive late Wednesday from the west and move across the state overnight. Damaging winds and large hail will be the primary threats. Heavy rain is also a concern for areas that will have received the most rain so far this week. .SPOTTER INFORMATION STATEMENT... Spotters may be needed today through Thursday morning. Rainfall amount reports are also appreciated. Jimenez
In the hours before
Local storm report, Jul 31, 1:52 AM CDT, 1 hour 31 minutes before
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</html>Local storm report, Jul 31, 1:53 AM CDT, 1 hour 30 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 1:15 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene, Guthrie | 45 min |
| Jul 31, 1:49 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Jasper, Madison, Marion, Polk, Warren | 41 min |
| Jul 31, 1:56 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene, Guthrie | 49 min |
| Jul 31, 2:25 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk, Warren | 50 min |
| Jul 31, 3:42 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 48 min |
| Jul 31, 4:05 AM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 25 min |
| Jul 31, 7:34 AM CDT | Special Weather Statement | DMX | Mahaska | 11 min |
| Jul 31, 7:47 AM CDT | Flash Flood Warning | DMX | Davis, Monroe, Wapello | 5 hr |
| Jul 31, 7:54 AM CDT | River Flood Warning | DMX | Davis, Wapello | 18 hr |
| Jul 31, 8:02 AM CDT | Flash Flood Warning | DMX | Mahaska, Marion, Warren | 4 hr |
| Jul 31, 10:13 AM CDT | Severe Thunderstorm Warning | DMX | Davis | 47 min |
| Jul 31, 10:47 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 43 min |
| Jul 31, 11:27 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 48 min |
| Jul 31, 12:23 PM CDT | Areal Flood Warning | DMX | Appanoose, Davis, Mahaska, Marion, Monroe, Wapello and 1 more | 24 hr |
| Jul 31, 6:26 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Audubon, Carroll, Cass, Crawford and 3 more | 64 min |
| Jul 31, 6:37 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Madison, Ringgold, Taylor, Union | 53 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2024Every severe thunderstorm warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.